Add peanut butter and butter to saucepan. Melt on medium heat. Do not boil.
Add butterscotch chips, stir until melted and smooth.
Add butterscotch- peanut butter mixture to the miniature marshmallows.
Mix until well combined and spread into greased 9 x 9 cake pan.
Spread into greased 9 x 9 baking pan.
so easy to make